#!/usr/bin/python
# -*- coding: UTF-8 -*-
__author__ = 'Michael Liao'


import sys


def test():
    args = sys.argv
    if len(args) == 1:
        print('Hello World!')
    elif len(args) == 2:
        print("Hello, %s!" % args[1])
    else:
        print("Too many arguments!")


if __name__ == '__name__':
    test()
